MT60F-U1
2006.9
THE TABLE OF CONTENTS
1. SPECIFICATIONS 1
2. UNIT BLOCK DIAGRAM 2
3. WIRING DIAGRAM 2
4. INSTALLATION 3
4-1 INSTALLATIOＮ AND VENTING
4-2 WIRE GAUGE IS IMPORTANT
5. TROUBLE SHOOTING 4～5
5-1 BLOCK DIAGRAM
5-2 TYPICAL TROUBLE
5-3 TECHNICAL DATA
6. CHECKING POINTS ＆ MEASURING 6
6-1 Compressor input voltage
6-2 Compressor coil resistance
6-3 Thermistor resistance
7. WORKING ORDER FOR REPLACEMENT 7～8
7-1 Cooling Unit
7-2 Power Supply
1
1. SPECIFICATIONS
STORAGE VOLUME ℓ（liter）
in
mm
in
mm
DOOR
CABINET
DOOR
CABINET
AC
DC
AC
DC
LBS.
Kg
F SERIES MODEL
COMPRESSOR RATING
EXTERIOR FINISH
INTERIOR FINISH
INPUT VOLTAGE
RATED AMPERAGE
INTERIOR DIMENSIONS
W×D×H
EXTERIOR DIMENSIONS
W×D×H
AC85〜132V 50/60Hz
DC 11V〜32V
4.2A
(Input voltage DC 12.8 V, Ambient temperature 30℃）
1.2A/AC120V
TEMPERATURE CONTROL Electronic thermostat
AC 16 V, 3A 48W
REFRIGERANT
AVERAGE INSIDE ROOM
TEMPERATURE
(at Ambient temperature 30℃）
MT60F-U1
60
31.1×19.3×17.2
(Max. 31.6×20.5×17.4)
790×490×436
(Max. 801.5×520×441)
Melamine coating steel plate
A.B.S. Resin
20.4×14.9×12.4
517×378×315
71
32
Dichlorodifluoromethane (R-134a)
7℃±3℃
by Thermostat control NOTCH 1
TEMPERATURE CONTROL NOTCH 5
OR FREEZE
(at Ambient temperature 30℃）
Under −18 ℃
WEIGHT
2 . BLOCK DI AGRAM
2
3.WIRING DAIGRAM
AC85〜132V
50/60Hz
OPTIONAL PARTS
AC85〜132V
50/60Hz
DC11〜32V
DC11〜32V
+
+
4. INSTALLATION
4-1 INSTALLATION AND VENTILATION
(1) Your shockproof fridge should be installed on a solid surface board or floor. .
(2) Be sure your fridge is not put in direct sunshine, near a gas stove, heater or other
heat-generating appliances.
(3) Adequate ventilation and suitable distance from each wall (at least 150mm or more)
result in maximum cooling performance and minimum electric current consumption for
"free standing use" (refer to the fig. as below).
(4) Avoid installing your fridge close to a kitchen sink and faucet.
(5) If you would like to use the fridge under the counter or in the fixing box, please make
sure the following air ventilating condition.
① Make the openings for ventilation at top and bottom cover both side.
② Opening size must be larger than 160㎠ for each opening (additional air circulation
above the condenser is expected better cooling performance).
［CAUTION］
Insufficient ventilation results in poor cooling performance, compressor continuous
operating, to be accelerated battery discharge and sometimes to be shortened
the fridge life.
4-2 WIRE GAUGE IS IMPORTANT !
Please use following wire for the connection from refrigerator to battery.
Shorter than 3.7 m (12 ft.)
From 3.7 m (12 ft.) to 6.1 m（20 ft.)
3
Distance Between Fridge and battery
DC 12 volt series
Wire gauge
From 6.1 m (20 ft.) to 9.6 m（31.5 ft.)
SWG ♯ 18 (AWG ♯ 16) / 1.2㎟
SWG ♯ 16 (AWG ♯ 14) / 2.1㎟
SWG ♯ 14 / 3.2 ㎟
(AWG ♯ 12 / 3.3 ㎟)
㎠
㎜
㎠
5. TROUBLE SHOOTING
5-1 BLOCK DIAGRAM
Check Result Judge Repair
Interval moving
Input voltage DC12V, 0～10A The compressor is Replace the
Compressor Yes DC12V, 4.2A DC24V, 0～5A locked, or contaminated cooling unit
works DC24V, 2.1A
No Lower than rated Gas is leaking or no compression
No amperage ( surface of condenser is
ambient temperature
No cooling DC cord Wiring and couplers No good Change couplers
fuse blow are connected
out (12V) Thermister is broken (∞Ω） Replace the
thermister
Yes Resistance of Disconnect the coupler and check
the thermister 2-10kΩ ( good ), ∞Ω ( bad )
Compressor coil is
open circuit.
In case open-circuit: ∞Ω
Input voltage and Replace cooling unit
resistance at the AC 14～18V Compressor is locked, or
terminal of coil short-circuit
compressor. In case locked: 1.23Ω ※1
AC 14〜18V (normal) Lower than approx. 14V In case short-circuit: 0Ω
1.23Ω( normal ) ※1
Input voltage,12〜30V
Ambient temp. 25℃ AC 0V Power Supply is broken Replace
Power Supply
Check +, - Input connection: No Go to A
at input cord +, - is reversed. Check the fridge
from battery.
Yes Check the vehicle.
Bat. Voltage, wiring,
fuse, etc.
※1 This data come from Laboratory standard measurement.
6-1
6-2
6-3
6-2
A
6-2
4
5-2 TYPICAL TROUBLE
Source Measuring Result Operations
Compressor coil is open circuit Compressor coil resistance is ∞Ω Replace the cooling unit
No cooling ( Normal: 1.23Ω ※1 )
Power Supply brake down Power Supply output voltage is AC 0V Replace the Power Supply
Control Compressor does not ( Normal: AC14〜18V )
indicating lamp operate. Wire thermistor is open circuit Thermistor resistance is ∞Ω Replace the thermistor
is lighting ( Normal: 2kΩ〜10kΩ )
* Cooling Unit gas leak Replace the cooling unit
* Fan motor brake down Replace the fan motor
Cooling performance is * Input voltage is lower than DC 10V Charge the battery
not enough. * Ambient temperature is higher than 30℃
* Ventilation for compressor and condenser is not At least make clearance
enough
100 mm between fridge and wall
* To be stored too much in the fridge Make good circulation of cold air
* The special fuse of the DC cord blow out Replace the fuse
Control indicating lamp is not light * Fuse of the vehicle blow out Replace the fuse
* DC power line of the vehicle is not good Check the vehicle
5
5-3 TECHNICAL DATA
※1 This data come from Laboratory standard measurement.
Measuring Points
Normal data
Compressor input voltage At the terminals of the compressor
Approx. AC 14V 〜 18V
Power Supply output voltage At the output cords from the Power Supply Approx. AC 13V 〜 18V
( Unfasten the output cords to the compressor)
Compressor coil resistance Between compressor terminals Approx. 1.23Ω ※1
( Unfasten output cords from compressor)
Thermister resistance
Between 2 pins of the thermistor connecter Approx. 2KΩ 〜 10KΩ
DC cord Fuse resistance Both side of Fuse Normal: 0Ω
Checking items
Condition
6. CHECKING POINTS ＆ MEASURING
6-1 Compressor input voltage (Fig. 1)
・Measure at 2 poles coupler of Power Supply
or at the input terminals of the compressor.
(Keep to connect the compressor when you measure it.)
Readings Judgment
Approx. AC14〜18V
Normal
AC 0 V Power Supply is broken
6-2 Compressor coil resistance (Fig.2)
Unfasten 2 poles coupler to the compressor and measure.
Readings Judgment
Approx. 1.23 Ω ※1 Normal
∞Ω Broken (open circuit)
0Ω Broken (short circuit)
※1 This data come from Laboratory standard measurement.
6-3 Thermistor resistance （Fig.3)
Unfasten the 3 poles coupler at the Power Supply and meature
Readings Judgment
Approx. 2 kΩ〜10 kΩ
Normal
∞Ω Broken (open circuit)
0Ω Broken (short circuit)
Note ) Compressor runs continuously when you make to short circuit at this coupler.
6
Approx. AC14V or lower
and interval moving
Compressor is locked
7. WORKING ORDER FOR REPLACEMENT
7-1 Cooling Unit
1. Remove Motor Cover (Fig.1)
Remove 4 screws which hold Motor Cover.
2. Remove 3 screws at Evaporator (Fig.2)
Take out the basket first,
3. Take out Cover Pipe (Fig.3)
① Take off the cover.
② Remove 4 screws.
③ Pull out cover pipe.
④ Detach the rubber holders.
4. Remove 2 screws at the hanger of
the compressor. ( Fig. 4-① )
5. Remove 2 screws at condenser. (Fig.4ー②)
6. Remove the earth screw. (Fig.4-③)
7. Take out Cooling Unit. (Fig.5)
① Take out Cooling Unit from the cabinet.
② Remove the screw which holds thermistor.
8. Take off the input cord from the compressor. (Fig.6)
① Take off the live side.
② Take off the earth side.
7-2 Power Supply
1. Remove the screws at Power Supply. (Fig.7)
7
2. Remove Motor Cover. (Fig.8)
3. Pull out all the couplers at Power Supply (Fig.9)
① Motor input coupler
② Fan motor coupler
③ Thermister coupler
④ Control assy coupler
4. Remove the screws at Power Supply (Fig.10)
5.Pull out Power Supply towards the top (Fig.11)
6. Remove Power Supply from cover (Fig.12ー①)
7.Remove earth connection (Fig.12-②)
8
/
